Argentina: A9999AAA . The first letter (A) indicates the province, the four numbers (9999) are the old postal codes, the three last letters (AAA) indicate a side of the block.
Bermuda: AA 99* for street addresses, AA AA* for PO Box addresses. The second half of the postcode identifies the street delivery walk (eg: Hamilton HM 12) or the PO Box number range (eg: Hamilton HM BX).
Brazil: 99999-999 (previously 99999, from 1972 to 1992) -000 to -899 are used for Streets, Roads, Avenues, Boulevards, -900 to -959 are used for places with a high postal use, -960 to -969 are for promotional use, -970 to -989 are public owned post offices and -990 is used in franchised post offices.
Canada: A9A 9A9* Usually prefixed by a two-letter abbreviation for the province or territory. See Canadian postal code. The letters D, F, I, O, Q, and U are excluded from all zip codes for being confused with other letters.
Cuba: 99999* Prefixed by "CP" - may only be required for bulk mail.
Cyprus: 9999 - Post code system covers whole island, but not used in Northern Cyprus where 'Mersin 10, Turkey' is used instead. Incoming mail asks that CY- is preceding the postcode. Supposivly 9999-9999 covers the whole island (including the north). See Postal_services_in_Cyprus for more information.
Faroe Islands: 999 Prefixed with "FO", eg: FO-110 Tórshavn
Finland: 99999. A lower first digit indicates a place in south (for example 00100 Helsinki, a higher indicates a place in far the north (99800 in Ivalo ). The last digit is always 0, except for postal codes for PO Box number ranges, in which case it is 1. In the Åland Islands, the postal code is prefixed with "AX", not "FIN". New country code for Finland: "FI".
Mexico: 99999. The first two digits identify the state (or a part thereof), except for Nos. 00 to 16, which indicate delegaciones (boroughs) of the Federal District (Mexico City).
New Zealand: 9999*. Postcodes in New Zealand are intended for bulk mailing and are not needed for addressing individual items. See also New Zealand postal addresses
United Kingdom: known as the postcode: A9 9AA, AA9 9AA, A99 9AA*, or AA99 9AA* but other variants are also used. In general the first letter(s) indicate the town, or area, or part of London. See London postal districts for more.
United States of America: known as the ZIP Code with five digits 99999* or the ZIP+4 Code with nine digits 99999-9999* (while the minimum requirement is the first five digits, the U.S. Postal Service encourages everyone to use all nine). Also used by the former US Pacific Territories: Federated States of Micronesia; Palau; and the Marshall Islands.
